I saw a new nightly build of Lakka for my RPi4 was up, but there is no .tar file to update the way I have in the past.
Actually, there seem to be no .tar files anywhere in the nightlies anymore except the one for NOOBS and older .tar’s that I have downloaded in the past to update seem to have been removed 
Is something wrong with the nightlies server?
I thought vudiq added them, let me check and get back to you
Why do you want the tarballs?
There is nothing wrong with the server, it’s just these are (in my opinion) redundant. you can always download system + kernel files (if you’re updating manually) or img.gz when using the update folder. the fact is that having all options (img + tar + system+kernel) simply needs more storage. if you have problems updating with img.gz, try adding BOOT_IMAGE=/kernel.img to cmdline.txt.
The .tar package was the only method that worked for updating the RPi4 in the past, but now I will try the img.gz file with the amended commandline and see if that works.
Thank you, keep us posted. If it does not work out, we can drop kernel+system and leave .tar.
It is working fine now after I updated the ‘cmdline.txt’ and I am now able to update using the .img.gx file. Thanks for the help!